Its been a long haul but I'm pleased to tell you that my CTC overpayment demand from HMRC (2004-2006) has now been cancelled.I'd initially had a solicitor look at the the case for several weeks(at a cost!)but can tell you this is not the way to go as HMRC matters is very specialist area..After months of anxiety on your advice I made contact with LITRG who pursued my case and made impact within the first few weeks and eventially resolved the HMRC overpayment error!Thank you again TCC and can only highly recommend LITRG..